Block Delimiter: add package contents

[jeherve]

Proposed changes:

Following #43645, this brings the contents of the package from its original class on WordPress.com.

In order to do that, I've also had to make a few changes:

• I fixed some PHPCS warnings. See ca6f2ba
• I removed typed properties. This package requires PHP 7.2, and typed properties were introduced in PHP 7.3. See f636bb5

I also added a first set of tests for this new class. See ed7ae1b

Other information:

• Have you written new tests for your changes, if applicable?
• Have you checked the E2E test CI results, and verified that your changes do not break them?
• Have you tested your changes on WordPress.com, if applicable (if so, you'll see a generated comment below with a script to run)?

Jetpack product discussion

• Internal reference: p7H4VZ-5l1-p2

Does this pull request change what data or activity we track or use?

• No

Testing instructions:

Since the package is not yet required by our plugin, we cannot see it in action. For now, tests should be enough.

[github-actions]

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[jp-launch-control]

Code Coverage Summary

Coverage changed in 1 file.

File	Coverage	Δ%	Δ Uncovered
projects/packages/block-delimiter/src/class-block-delimiter.php	225/253 (88.93%)	-11.07%	28 💔

Full summary · PHP report

_{Coverage check overridden by I don't care about code coverage for this PR Use this label to ignore the check for insufficient code coveage. .}

[Copilot]

Pull Request Overview

This PR brings in the contents of the package from its original class on WordPress.com while addressing PHPCS warnings and PHP version compatibility. Key changes include removing the version-constants block from composer.json, addressing PHPCS warnings, and adding an initial changelog file for the new functionality.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
projects/packages/block-delimiter/composer.json	Removed the "version-constants" field to support PHP 7.2 usage.
projects/packages/block-delimiter/changelog/add-block-delimiter-contents	Added a changelog entry for the new package content integration.

Comments suppressed due to low confidence (1)

projects/packages/block-delimiter/composer.json:50

• The removal of the 'version-constants' block might affect how the package version is automatically injected. Verify that consumers of the package will not be adversely impacted by this change in version management.

"textdomain": "jetpack-block-delimiter"